CN214565131U - Anti-deformation supporting structure for automobile firewall - Google Patents

Abstract

The utility model relates to the field of automobile body protection structures, in particular to an automobile firewall anti-deformation supporting structure, which comprises an anti-deformation supporting structure body, wherein the peripheral side surface of the anti-deformation supporting structure body is provided with a side surface flanging structure, the upper end surface of the anti-deformation supporting structure body is connected with a foot rest area supporting frame, and the anti-deformation supporting structure and the foot rest area supporting frame are fixedly connected through a fixing part; the foot rest area support frame is provided with a transverse extension part and a longitudinal extension part, the longitudinal extension part of the foot rest area support frame extends downwards to the anti-deformation support structure body, and the longitudinal extension part of the foot rest area support frame is provided with a flanging structure towards the side. This scheme of adoption can guarantee that driver's foot does not produce great moment of flexure under the condition of atress under the prerequisite that the automobile body does not make great change to reduce the injury that driver's shank received.

Description

Anti-deformation supporting structure for automobile firewall

Technical Field

The utility model relates to an automobile body protective structure field, concretely relates to car prevents deformation bearing structure that prevents of hot wall.

Background

The front collision is one of common motor vehicle traffic accident types, and in recent years, the automobile industry generally adopts a front 100% rigid wall 50KPH collision test, a front 50% overlapping Movement Progressive Deformation Barrier (MPDB) collision test and a front 25% offset collision test to verify whether the automobile structural design can protect the safety of a driver or not, and whether the matching of a restraint system can protect drivers and passengers or not, so that the injury is reduced. The evaluation standards of the three frontal crash tests include the evaluation of damage to thighs and shanks, and the newly published C-NCAP2021 standard also adds evaluation and correction of feet.

With the updating of evaluation criteria, the design requirements for crashworthiness of vehicle body structures are also changing. The collision tests with higher requirements on the design of the vehicle body structure comprise a front 25% offset collision test and a front 50% overlapped Moving Progressive Deformation Barrier (MPDB) collision test, the invasion of the collision tests to a firewall is larger than the invasion to the living space of passengers, and the firewall basically cannot bear the force in the vehicle collision at the moment and only plays a role in connecting various parts.

Chinese patent publication No. CN211075797U discloses that the present invention relates to a firewall support structure for a vehicle and a vehicle. The firewall support structure is arranged next to the side, facing the passenger compartment of the vehicle, of the firewall panel of the vehicle and comprises an upper end welding structure part positioned at the upper end of the firewall support structure, a middle welding structure part positioned in the middle of the lower end of the firewall support structure and lower end welding structure parts positioned at two sides of the lower end of the firewall support structure, and the firewall support structure also comprises a support structure part; and the firewall support structure connects the firewall panel with a central tunnel structure of a vehicle.

The case can enhance the transmission efficiency of the frontal collision force through the firewall supporting structure, and prevent the longitudinal beam from being extruded and collapsed to invade the leg space of a passenger, thereby ensuring the collision resistance stability of the passenger compartment and playing a role in protecting the driver and the feet. In order to effectively transmit collision impact force, the firewall supporting structure is designed to form a certain radian, a driver foot rest area is designed on the arc-shaped structure, and the arc-shaped structure design is not beneficial to the movement of the driver feet in collision. When the radian structure is collided or extruded, the feet of a driver deflect along with the arc structure to cause that the lower leg is subjected to a larger bending moment, so that the legs of the driver are greatly injured.

Therefore, the automobile firewall anti-deformation supporting structure is needed, and the feet of a driver are not subjected to large bending moment on the premise that the automobile body is not greatly changed, so that the leg injury of the driver is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a car prevents deformation bearing structure of hot wall, the prerequisite of not doing great change at the automobile body gets off to guarantee that driver's foot does not produce great moment of flexure under the condition of atress to reduce the injury that driver's shank received.

In order to achieve the purpose, the technical scheme of the utility model provides an automobile firewall anti-deformation supporting structure, which comprises an anti-deformation supporting structure body, wherein the side surfaces of the periphery of the anti-deformation supporting structure body are provided with a side surface flanging structure, the upper end surface of the anti-deformation supporting structure body is connected with a foot rest area supporting frame, and the anti-deformation supporting structure is fixedly connected with the foot rest area supporting frame through a fixing part; the foot rest area support frame has horizontal extension and longitudinal extension, the longitudinal extension of foot rest area support frame extends downwards to on the deformation-proof supporting structure body, the longitudinal extension of foot rest area support frame is equipped with turn-ups structure to the side.

The technical principle of the scheme is as follows: the setting of the deformation-preventing supporting structure body can bear partial force after being impacted, and on the basis, partial force can be transmitted to the periphery of the deformation-preventing supporting structure body, the impact force at the lower cabin of a passenger is transmitted to the longitudinal beam and the other sides, and the legs of a driver are protected.

The setting of the turn-ups structure to the side on the shape bearing structure body of preapring for an unfavorable turn of events is used for preapring for an unfavorable turn of events shape bearing structure body and prevent that hot wall carries out welded fastening, make preapring for an unfavorable turn of events shape bearing structure body and prevent hot wall and become a whole, when receiving the striking in order to let the driver, the range of rocking of its left foot is alleviated and is improved, come for a relatively firm fulcrum of driver through setting up the district support frame of stopping for a rest of the foot, left side foot atress is relatively stable, the removal of foot also can be relatively more stable like this, under the impact force, driver foot atress is stable, remove and stably not produce great moment of flexure, further reduce the shank injury. The fixing piece is used for fixing the deformation-preventing supporting structure body and the foot rest area supporting frame together.

The technical effect of the scheme is as follows:

1. utilize and prevent deformation supporting structure body can bear the transmission to all around of some extruded power while can also being with some extruded power to make the extruded power that the foot received can reduce, can make the injury that the shank received reduce.

2. The deformation-preventing supporting structure body and the foot rest area supporting frame can be regarded as two vehicle parts, the structure of a vehicle cannot be greatly changed when the deformation-preventing supporting structure body and the foot rest area supporting frame are installed, only the flanging structure arranged on the deformation-preventing supporting structure body is required to be fixed on a fireproof wall through a welded side, and the change of the vehicle body is small on the whole.

3. Under the not very big prerequisite of change, use the foot of rest area support frame to give the driver left leg a better stable impetus, under the impact force, driver foot atress is stable, and the removal is stable does not produce great moment of flexure, further reduces the shank injury, guarantees that driver foot does not produce great moment of flexure under the condition of atress to reduce the injury that driver's shank received.

Further, the fixing piece is a fixing bolt.

Furthermore, a groove is formed in the middle of the anti-deformation supporting structure body.

The recess on the deformation-preventing support structure body can make whole deformation-preventing support structure body demonstrate crooked structure, and this makes when receiving the striking, and the power dispersion that will receive that can be fine is opened, also can have the effect of better volume supporting force.

Further, the average thickness of the support frame in the foot rest area is 1.5 mm.

The average thickness of the resting leg support is 1.5mm, and the deformation amount is within 10-25mm when the resting leg support bears 3-4.5KN force.

Further, the upper end face of the deformation-preventing supporting structure body is provided with EPP foam, and the EPP foam is fixedly connected to the side face of the supporting frame in the foot rest area.

When not receiving the striking, EPP foaming probably is equivalent to a board harder to the driver, can be fine let driver's foot shelve on it, and when receiving the striking, EPP foaming will show better elasticity, the injury of the foot that can be fine let driver obtains the buffering.

Further, the deformation-preventing support structure body and the foot rest area support frame are integrally formed in a stamping mode.

The structure of the anti-deformation supporting structure body and the foot rest area supporting frame which can be formed integrally is more stable and firm, and when impact occurs, the anti-deformation supporting structure body and the foot rest area supporting frame are more resistant to impact than being spliced together.

Further, the cross section of the groove is trapezoidal. The grooves with trapezoidal cross sections can receive larger force, and the buffering effect is better.

Drawings

Fig. 1 is the embodiment of the utility model provides a prevent hot wall deformation-proof supporting structure sketch map.

Fig. 2 is a schematic view of the supporting bracket and the fixing bolt in the foot rest area according to the embodiment of the present invention.

Fig. 3 is the embodiment of the utility model provides a prevent hot wall deformation-proof bearing structure assembly drawing.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the anti-deformation support structure comprises an anti-deformation support structure body 1, a foot rest area support frame 2, a fixing piece 3, EPP foaming 4, a firewall 5, a carpet 6 at a foot rest area of a driver and a dummy 7.

Example one

An embodiment substantially as shown in figures 1 and 3: the utility model provides a car prevents 5 shape bearing structure of preapring for an unfavorable turn of events of hot wall, including the shape bearing structure body of preapring for an unfavorable turn of events body 1, it is 2 to have a rest of the feet district support frame, mounting 3 and EPP foaming 4, the side is to the turn-ups structure to the side all around of the shape bearing structure body of preapring for an unfavorable turn of events 1, the setting of this structure is for better and prevent 5 welded fastening of hot wall, for the better power of bearing the striking, set up the recess in the centre of the shape bearing structure body of preapring for an unfavorable turn of events body 1, such setting also can avoid more extruded power to transmit on positive direct to driver's left leg, also can be to transmitting partly power all around simultaneously, transmit the impact force of passenger cabin department down to longeron and other routes, protect driver's shank. Be provided with on the deformation of preapring for an unfavorable turn of events supporting structure body 1 up end and take out a rest of the feet district support frame 2, take out of the rest of the feet district support frame 2 and have horizontal extension and longitudinal extension, wherein the longitudinal extension downwardly extending to the deformation of preapring for an unfavorable turn of events supporting structure body, for the convenience of the connection of deformation of preapring for an unfavorable turn of events supporting structure body and longitudinal extension, longitudinal extension is equipped with and turns over to the side, and the support frame 2 of preapring for an unfavorable turn of events is L type structure in this embodiment.

As shown in fig. 2, in order to tightly connect the deformation-preventing supporting structure body 1 and the footrest area supporting frame 2, the fixing members 3 are used to fix the deformation-preventing supporting structure body 1 and the footrest area supporting frame 2.

Meanwhile, the upper end surface of the anti-deformation supporting structure body 1 is fixedly connected with an EPP foam 4 by bolts, in the embodiment, the EPP foam is a polypropylene plastic foam material and is a compression-resistant buffering heat-insulating material, the EPP foam 4 is fixed on the side surface of the foot rest area supporting frame 2, so that the left foot of a driver can simultaneously step on the foot rest area supporting frame 2 and the EPP foam 4, in the embodiment, the stepping structure is adopted, mainly, if only the EPP foam 4 is fixedly connected to the anti-deformation supporting structure body 1, although the EPP foam 4 has the characteristic of elasticity, the impact force can be well buffered, so that the impact force is reduced, in this case, the left foot of the driver can not well impact the foot, the bending moment of the leg can occur due to the characteristic, and the moment of the bending moment born by the leg is very large, so that the legs of the driver are injured; if only the foot rest area supporting frame is fixedly connected, although a good fulcrum is given to a driver, the left foot can be kept stressed stably, when the driver is impacted, the force applied to the left foot is large, and the left foot is also greatly damaged.

In the embodiment, the average thickness of the resting area support frame 2 is 1.5mm, the deformation amount is within 10-25mm when the resting area support frame bears 3-4.5KN force, and meanwhile, the deformation-preventing support structure body 1 and the resting area support frame 2 are integrally formed by stamping, so that the structures of the deformation-preventing support structure body 1 and the resting area support frame 2 are firmer, and the borne extrusion force is larger.

The specific implementation process is as follows:

when the front cabin of the automobile is strongly collided and extruded and deformed, the deformation-preventing supporting structure body 1 can bear a part of force when the extrusion force is resisted, and can transmit the force to other paths, particularly to where the force is transmitted and mainly to what direction the extrusion force comes from, at the moment, the force for extruding the left leg of the driver is reduced as a whole, because the front part of the left foot of the driver steps on the foot rest area supporting frame 2 and the rear part of the left foot of the driver steps on the EPP foam 4, when the left foot of the driver is subjected to the extrusion force, a firm acting point is provided, the left-right shaking of the left leg can not occur, the problem that the moment of bending moment is larger at the moment and the injury to the left leg of the driver is larger can not occur, and simultaneously the EPP foam 4 partially offsets the extrusion force by utilizing the elastic characteristic of the EPP foam 4 when the extrusion force is extruded, the compressive force experienced by the left leg of the driver is thus reduced again, and injury to the left leg of the driver is reduced.

Example two

Compared with the first embodiment, deformation-preventing supporting structure body and foot rest area support frame carry out fixed connection through the stickum in this embodiment, the bonding through the stickum not only can keep deformation-preventing supporting structure body and the foot rest area support frame between fixed, and the firm degree of fixing does not have big change yet, the mode of nut bolt fastening can cause driver's foot and bolt to be crowded with strength when the car bumps simultaneously, this will cause the unnecessary injury to driver's foot, and use the stickum to fix and just can avoid this problem, can be better protect the driver.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be pointed out that, for the person skilled in the art, without departing from the structure of the invention, several variants and modifications can be made, which should also be regarded as the scope of protection of the invention, which will not affect the effectiveness of the implementation of the invention and the practicality of the patent.

Claims (7)

1. The utility model provides a car prevents hot wall shape bearing structure of preapring for an unfavorable turn of events, includes the shape bearing structure body of preapring for an unfavorable turn of events, its characterized in that: the lateral surface of the periphery of the anti-deformation supporting structure body is provided with a lateral surface flanging structure, the upper end surface of the anti-deformation supporting structure body is connected with a foot rest area supporting frame, and the anti-deformation supporting structure is fixedly connected with the foot rest area supporting frame through a fixing piece; the foot rest area support frame has horizontal extension and longitudinal extension, the longitudinal extension of foot rest area support frame extends downwards to on the deformation-proof supporting structure body, the longitudinal extension of foot rest area support frame is equipped with turn-ups structure to the side.

2. The automobile firewall anti-deformation supporting structure as claimed in claim 1, wherein: the fixing piece is a fixing bolt.

3. The automobile firewall anti-deformation supporting structure as claimed in claim 2, wherein: a groove is formed in the middle of the anti-deformation supporting structure body.

4. The automobile firewall anti-deformation supporting structure as claimed in claim 3, wherein: the average thickness of the resting foot area support frame is 1.5 mm.

5. The automobile firewall anti-deformation supporting structure as claimed in claim 4, wherein: the upper end face of preapring for an unfavorable turn of events shape bearing structure body is equipped with the EPP foaming, EPP foaming fixed connection in the side of the district support frame of stopping a rest on a walking tour.

6. The automobile firewall anti-deformation supporting structure as claimed in claim 5, wherein: the deformation-preventing support structure body and the foot rest area support frame are integrally formed in a stamping mode.

7. The automobile firewall anti-deformation supporting structure as claimed in claim 3, wherein: the cross section of the groove is trapezoidal.

Images